Malicious PDF — malware analysis report

Static analysis result for SHA-256 db7789c9e540c063…

MALICIOUS

PDF

84.0 KB Created: 2021-03-29 16:40:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fcf80d5fd23f8d13f79bc47126a43d5b SHA-1: d487598d8ba3b5e83a4af09e43c8a09e81f6ee70 SHA-256: db7789c9e540c063c3751da62f623f9cc973405ed7f3e996f996a4869f4fabf0
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external links, with a primary link pointing to 'https://gimoguvi.ru/wix?keyword=do+hard+things+alex+and+brett+harris+pdf', suggesting a phishing or SEO link farm attack. The presence of embedded URLs and the PDF_SEO_LINK_FARM heuristic further support the conclusion that this document is designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://gimoguvi.ru/wix?keyword=do+hard+things+alex+and+brett+harris+pdf
    • https://cdn-cms.f-static.net/uploads/4415929/normal_602b35514b92f.pdf
    • http://rofogukiluvupu.mygamesonline.org/kufinigokeruzovibe.pdf
    • https://cdn.sqhk.co/zanemulazif/jbiGslI/3106222168.pdf
    • http://luxasireku.sportsontheweb.net/rangkuman_biologi_sma.pdf
    • https://cdn-cms.f-static.net/uploads/4413362/normal_604aae47cdf85.pdf
    • https://disipewadapa.weebly.com/uploads/1/3/4/8/134870645/javanopemifoku.pdf
    • http://jojazinex.mygamesonline.org/ctet_syllabus_2020_december.pdf
    • https://cdn-cms.f-static.net/uploads/4383136/normal_602a4f4ee51ce.pdf
    • https://cdn-cms.f-static.net/uploads/4471481/normal_6020ff4f7800b.pdf
    • https://cdn.sqhk.co/nisisepolo/jf2hhig/word_wars_documentary_download.pdf
    • http://pakawuwujawo.getenjoyment.net/47215552094.pdf
    • https://cdn-cms.f-static.net/uploads/4469103/normal_5fdbcb5b9c519.pdf
    • http://mukinumatonewo.getenjoyment.net/wufefubokujozobadosodixo.pdf
    • https://cdn-cms.f-static.net/uploads/4495387/normal_605a5f38d2d55.pdf
    • https://static.s123-cdn-static.com/uploads/4374703/normal_5ff853435a408.pdf
    • https://mutomutozuso.weebly.com/uploads/1/3/0/8/130814133/7680627.pdf
    • https://static.s123-cdn-static.com/uploads/4486987/normal_5fed42256d9e7.pdf
    • https://cdn.sqhk.co/dubikewe/ajfhhXU/nautical_life_ring_decor.pdf
    • https://static.s123-cdn-static.com/uploads/4455376/normal_5fe170a9df392.pdf
    • https://cdn.sqhk.co/xexanodu/ghJCghp/bike_racing_helmet_reviews.pdf
    • https://cdn.sqhk.co/vefapatape/1jbigzN/chocolaterie_stam_omaha.pdf
    • https://cdn-cms.f-static.net/uploads/4464865/normal_605f615bc5b67.pdf
    • https://memabalizova.weebly.com/uploads/1/3/4/4/134490842/punatovanupibuzaseji.pdf
    • https://fafogefefotal.weebly.com/uploads/1/3/5/3/135314601/kememitarorov.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/444a00b7-c277-430a-bdbe-a6d9ca91e2b3/34458218037.pdf
    • https://uploads.strikinglycdn.com/files/bbb08334-5661-4653-952b-dcd06418a21f/viraberokawaz.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fafe.bin
d7d9882ffd6f69d70185e72bdeae026b56b776322706d18ba75e02de16091353		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFAFE 5296 bytes
font_01_sfnt_off00010d00.bin
b294206f60acac63aacd94af1bf9dcb8a2a46803b1c8543c4952ff08d5dc0699		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10D00 11284 bytes
font_02_sfnt_off000133a0.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x133A0 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.